Restore Your SUV’s Electrical System with a Reliable, Programmed BCM
If you’re dealing with bizarre and frustrating electrical problems in your 2009-2012 Chevrolet Traverse, a failing Body Control Module (BCM) is the most likely culprit. As the central command center for your vehicle’s body electronics, the BCM controls everything from your power windows and door locks to your interior lighting and security system. When it starts to fail, it can cause a cascade of issues that are often difficult to diagnose.
Forget the expensive trip to the dealership and the uncertainty of a used part. We offer a dependable, professionally prepared BCM that arrives at your door programmed with the latest GM software updates, specifically matched to your vehicle’s VIN. This eliminates the need for costly on-car programming, saving you time and money. Simply provide your VIN after purchase, and our experts will handle the complex programming before shipping it out. It’s the most direct path to getting your Traverse back to normal.
A Technician’s Notebook: The Case of the Haunted SUV
A customer brought in a 2011 Acadia—which shares its platform with the Traverse—with a list of complaints that sounded like the vehicle was possessed. The radio would turn on and off by itself, the liftgate wouldn’t open, and the ‘Service StabiliTrak’ message was constantly on. A scan showed a slew of U-codes, specifically U0140 (Lost Communication With Body Control Module). While these symptoms could point to wiring issues, my experience with these GM platforms immediately led me to the BCM. After confirming power and ground at the module were good, we swapped in a pre-programmed BCM. The difference was immediate. All the random electrical gremlins vanished. This is a classic failure I’ve seen dozens of times; internal circuit board corrosion or component failure inside the BCM creates these widespread, confusing symptoms.
Common Signs of a Failing GM BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights flickering, staying on, or not working at all.
- ✔ The vehicle’s security system acting up or preventing the engine from starting.
- ✔ Intermittent operation of the radio or climate controls.
- ✔ False warnings on the driver information center (e.g., ‘Service Airbag,’ ‘Service StabiliTrak’).
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
A Straightforward Guide to Your BCM Installation
Installing your new BCM is manageable for a DIYer with basic tools. In the 2009-2012 Traverse, the BCM is located on the left-hand (driver’s) side of the dashboard, typically behind the lower dash panel near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes before beginning.
- Access the Module: Carefully remove the lower dash panel beneath the steering wheel to expose the BCM and its wiring harnesses.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical connectors.
- Reconnect Power: Re-attach the negative battery terminal.
- Perform Final Checks: Start the vehicle and test all body functions—lights, locks, windows, radio, etc. Note that some post-installation procedures may be required as detailed below.
Important Post-Installation Steps
Because this BCM is pre-programmed, most of the heavy lifting is done. However, depending on your vehicle’s specific configuration, a couple of final sync procedures may be necessary:
- Airbag System Sync: If the airbag light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure your brake lights and traction control work correctly, a brake pedal position sensor relearn might be required. This can also be performed with a compatible scan tool.
Verified Fitment for a Wide Range of GM Vehicles
This BCM is a direct replacement for part number 25826124 and is interchangeable with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084. It fits a wide variety of GM models, including but not limited to:
AVALANCHE 1500 10
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10
ESCALADE ESV 10
ESCALADE EXT 10
EXPRESS 1500 VAN 08-12
EXPRESS 2500 VAN 08-12
EXPRESS 3500 VAN 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500 VAN 08-12
SAVANA 2500 VAN 08-12
SAVANA 3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10
YUKON XL 1500 10
Always verify your part number and consult the detailed fitment list to ensure compatibility.
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to perform the programming service.
Is this a plug-and-play part?
Mostly, yes. Because we program it to your VIN, it eliminates the need for the main programming at a dealership. However, as noted, some vehicles may require minor, secondary relearn procedures for the airbag or brake pedal position sensor, which require a professional scan tool.
Do I need to send my old BCM back?
No, there is no core charge for this module. Our service involves sending you a replacement unit programmed with your VIN data. We always return your original module to you along with the replacement.
What if this doesn’t fix my problem?
While a faulty BCM is the cause of these symptoms over 90% of the time in our experience, electrical issues can also stem from wiring, grounds, or other modules. We recommend proper diagnosis before purchase. This BCM is guaranteed to be a functional, correctly programmed part.
Will this work for a different part number than 25826124?
Yes. This module is a direct replacement for a long list of interchangeable GM part numbers. Please check the comprehensive list provided in the description to confirm your original part number is included.